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Northwest Africa 10655
Basic information Name: Northwest Africa 10655
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10655
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 29.7 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  L3.05
Recommended:  L3.05    [explanation]

This is 1 of 3 approved meteorites classified as L3.05.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 1 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 10655 (NWA 10655)

(Northwest Africa)

Purchased: 2015 Dec

Classification: Ordinary chondrite (L3.05)

History: Purchased by Fabien Kuntz in December 2015 from a dealer in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, medium-sized chondrules (apparent diameter 400 ± 200 µm mm) set in a fine-grained matrix.

Geochemistry: Olivine (Fa2.9-70.7; Cr2O3 in ferroan examples 0.16-0.62 wt.%, mean 0.39±0.11 wt.%, N = 30), orthopyroxene (Fs1.0Wo1.1), pigeonite (Fs9.9Wo9.5), augite (Fs2.9-3.2Wo40.0-41.9, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.74.

Classification: Ordinary chondrite (L3.05). L designation supported by magnetic susceptibility. The mean and standard deviation for Cr2O3 contents of ferroan olivine occurring as rims and as matrix grains indicate a subtype of 3.05 based on the method of Grossman and Brearley (2005, Figure 15a).

Specimens: 6.63 g including one polished thin section at PSF; remainder with Kuntz.

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2015 Dec
Mass (g):29.7
Pieces:1
Class:L3.05
Shock stage:S2
Weathering grade:W2/3
Fayalite (mol%):2.9-70.7
Ferrosilite (mol%):1.0; 9.9; 2.9-3.2
Wollastonite (mol%):1.1; 9.5; 40.0-41.9
Magnetic suscept.:4.74
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):6.63
Type spec location:PSF
Main mass:F. Kuntz
Comments:K288; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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